Re: Another question on traits

Hi Nathan: On 17 Nov 2010, at 19:06, Nathan Nobbe wrote: > So it sounds like implementing an interface directly with a trait has been > shot down, Yes, Traits are meant to be compile-time only, they are not used to introduce typing relationships. > what I wonder about is will it still work if a class implements > an interface and uses a trait which provides the functions in said > interface? Yes, sure. > > <?php > interface IHello { > public function sayHello(); > } > > trait SayHello { > public function sayHello() { > echo 'hello world'; > } > } This is a typical pattern I would expect to see in code that uses traits. You have an interface and then you provide a trait thats provide a standard implementation for that interface. I would probably call the trait similar to the interface HelloImpl or THello or so. > > class MyHelloWorld implements IHello { > use SayHello; > } > > $o = new MyHelloWorld(); > var_dump($o instanceof IHello); // bool (true) > ?> If that does not work, it is a bug I think. Best regards Stefan > > thx, > > -nathan -- Stefan Marr Software Languages Lab Vrije Universiteit Brussel Pleinlaan 2 / B-1050 Brussels / Belgium http://soft.vub.ac.be/~smarr Phone: +32 2 629 2974 Fax: +32 2 629 3525